Hickling. — The Anatomy of Palaeostachya vera. 385 
bearing four sporangia each. Sporangia flattened in transverse, triangular 
in vertical section. Walls consisting of a single layer of buttressed cells as 
in Calamostachys. Spores about -08 mm., all of one kind. 
In concluding this paper I desire to express the thanks I owe to 
Dr. D. H. Scott, F.R.S., for valuable suggestions, the loan of his own 
slides, and facilities for the examination of those in the Williamson 
Collection, and to Prof. F. E. Weiss, D.Sc., for the loan of the slides in the 
collection of the Manchester Museum, Owens College. 
LITERATURE REFERRED TO. 
Lignier, O. (’03) : Equisdtales et Sphenophyllales. Leurorigine filicineenne commune. Bulletin de 
la Soc. Linn, de Normandie, 5 e sdr., 7® vol. Caen, 1903. 
Renault, B. (’96) : Flore Fossile du Bassin Flouiller et Permien d’Autun et d’Epinac, Pt. II. 
Paris, 1896. 
Scott, D. H. (’97) : On the Structure and Affinities of Fossil Plants from the Palaeozoic Rocks. 
I. On Cheirostrobus. Phil. Trans., vol. 189 B, 1897. 
(’00) : Studies in Fossil Botany. London, 1900. 
(’05) : On the Structures and Affinities of Fossil Plants from the Palaeozoic Rocks. 
V. On a New Type of Sphenophyllaceous Cone ( Sphenophyllum fertile ) from the Lower 
Coal Measures. Phil. Trans., vol. 198 B, 1905, pp. 17-39, Pis. III-V. 
Seward, A. C. (’98) : Fossil Plants, Pt. I. Cambridge, 1898. 
Solms Laubach, Graf zu (’91) : Fossil Botany. Oxford, 1891. 
Weiss, C. E. (’76) : Abhandl. der geol. Specialkarte von Preussen und den Thiiringischen Staaten. 
Bd. ii, Heft 1, Berlin, 1876 ; Bd. v, Heft 2, Berlin, 1884. 
Williamson, W. C. (’69) : On a New Form of Calamitean Strobilus from the Lancashire Coal 
Measures. Mems. Lit. and Phil. Soc. Manchester, Ser. 3, vol. iv, 1871, pp. 248-65. 
Pis. VII-IX. 
(’87) : Organization of the Fossil Plants of the Coal Measures. XIV. The 
True Fructification of Calamites. Phil. Trans., vol. clxxix B, 1888, pp. 47-57, Pis. VIII-XI. 
and Scott, D. H. (’94): Further Observations on the Organization of the 
Fossil Plants of the Coal Measures. I. Calamites, Calamostachys, and Sphenophyllum. 
Phil. Trans., vol. clxxxv B, 1894, pp. 863-959, Pis. LXXII-LXXXVI. 
EXPLANATION OF PLATES XXXII AND XXXIII. 
Illustrating Mr. Hickling’s paper on Palaeostachya vera. 
The letters attached to the catalogue-numbers of the slides are as follows: Q. = ‘ Cash ’ 
Collection (Manchester Museum) ; R. = Manchester Museum (general) Collection ; S. = Scott 
Collection ; W. = Williamson Collection (British Museum). 
PLATE XXXII. 
Fig. 1. Oblique transverse section. On left, in ‘ disc * ; on right, below. Br. — bract, sclerized 
tissue of ventral surface ; Br ' = soft tissue of ventral portion of bract ; C — portion of cortex, 
immediately below bract ; Ptxy. = protoxylem mass obliterating canal at node ; 2ny.xy. = secondary 
wood : note how this decreases rapidly as section ascends. S. 474. x 16. 
